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# init(deviceMatchingCriteria:)

Initializes a criteria object with the provided USB device matching properties.

```
convenience init(deviceMatchingCriteria: AAUSBAccessoryMatchingCriteria.DeviceMatchingCriteria)
```

## Parameters

`deviceMatchingCriteria`

The matching dictionary that contains USB device properties.

## Discussion

Use <doc://com.apple.documentation/documentation/IOUSBHost/IOUSBHostDevice/createMatchingDictionaryWithVendorID:productID:bcdDevice:deviceClass:deviceSubclass:deviceProtocol:speed:productIDArray:> to create the matching dictionary.

See USBSpec.h in <doc://com.apple.documentation/documentation/iokit/usbspec_h_user-space> in <doc://com.apple.documentation/documentation/iokit> for more details about dictionary keys for the USB device properties.

---

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